One of the many reasons I love my stepfather (other than he is the best stepdad anyone could ever have) is the fact that, were it not for him and the fact that he is Argentinian I might have never had Alfajores. My first experience with these tasty treats was when my parents arrived back from a trip to Argentina and my mother brought us a very generic/commercialized version of Alfajores. I admit that I absolutely loved them but only until I met their original counterparts. My husband and I had this distinct pleasure when we went to Argentina and had them at a local bakery. The bakery ones wiped the floor with the commercial version. There was no contest.
I never thought I would be able to find a recipe for alfajores that I could make at home, but the great Martha Stewart has proved me wrong. For her recipe complete with how to make your own dulce de leche follow this link.